This model is completely identical with the longyear tried and trusted bestseller "Multiload Cu 375 / 250 SL". Insertion requires a one-hand-technique only without preloading. The Mona Lisa Cu model is available in two versions: Mona Lisa Cu 375 With a copper surface of 375 mm² this version guarantees 5 years of safe contraception. Mona Lisa Cu 375 SL This version is identical to the Mona Lisa Cu 375, differing in a shorter stem length only (29.4 mm). It is suited for shorter uterus lengths.